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These micro channel coil manufacturers are very anal about using chemical coil cleaners. The issue is that the mc coils are highly susceptible to corrosion. It is not a matter of properly rinsing the...

We have tried them and they seem to loosen up over time. I have a walk-in TXV where the nut keeps backing off. Put on the plastic bonnet. Went back 6 mo later and the nut backed off and was leaking....

We stopped using the pink and other hazardous coil cleaners a couple years ago after we were asked to try the Viper cleaners. No more burns, no more stink, no more workman comp claims. The Viper for...

My company primarily does servicing, installs for over 40yrs and reclaiming refrigerant since the late 90's. Before we send an oil or refrigerant sample to a lab for testing we use the Checkmate test...

As I recall vacuum pump oil has a boiling point much higher than compressor oil. I believe that vacuum oil is also called "top cut", meaning all the lower boiling point portions of the oil have been...

Leak Sealer under any brand name will kill your compressor. Last season we condemned several units shot with the new Calgon easy sealer. Locked rotors seem to be the soup de jour. One comp was still...

We started using Viper last year after swearing off coil cleaning chemicals for the longest time. I can relate to what itsiceman is preaching in this discussion. I don't want any of my techs getting...

This oil is OEM approved and used in mini splits made in Japan and Korea. This company also makes the double end capped PAG oil recommended by just about every auto manufacturer. So this company has...

People who call you up to come out and get the cold air blowing but refuse to pay for a proper repair (leak check and fix) get the hit and run (gas and go) option from us also. We strike the warranty...